Process for preparing a water-absorbent polymer

Details Process for preparing a water-absorbent polymer Process for preparing a water-absorbent polymer

1992-11-12

1995-01-31

Cain, Edward

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

5253274, 5253277, 5253278, 5253291, 5253292, 5253294, 5253297, 5253302, 525384, C08F 800

Patent

active

053859839

ABSTRACT:
The subject invention provides a process for preparing a water-absorbent polymer by the addition of a surface crosslinking agent to a hydrogel. In particular, the subject invention provides a process for preparing a water-absorbent polymer by the addition of a surface crosslinking agent to a hydrogel in the absence of a surfactant.

REFERENCES:
patent: 3897382 (1975-07-01), Stoy et al.
patent: 4043952 (1977-08-01), Ganslaw et al.
patent: 4295987 (1981-10-01), Parks
patent: 4401797 (1983-08-01), Gallop
patent: 4666983 (1987-05-01), Tsubakimoto et al.
patent: 4734478 (1988-03-01), Tsubakimoto et al.
patent: 4880868 (1989-11-01), LeKhac
patent: 5002986 (1991-03-01), Fujihara et al.

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